Despicable service - Cannot provide any coverage and no support, only promises and lies

I am so dissappointed and frustrated with Telkom. I took a smart uncapped LTE contract with them, after checking if there was coverage in my area. Unfortunately, it seldom works and LTE speeds are non existent. When it does work, I have speeds of 3-4 mbs, with a max of 10 mbs. I have called the call center and used the chat facility many times since November Last Year, to log cases. I requested to speak to a manager 3 weeks ago, and I am still waiting for him to call me . I have had 2 visits from Telkom technicians who advised me there was no coverage and the external aerial would not work for my situation. When I call to check on the case, I am told that the case was closed, as they tried to call me back but could not reach me, which is untrue as I have never recieved any calls. I am currently paying every month for a Non existent service which Telkom cannot provide. This is unfair and is surely a breach of contract. Please assist me, as I will be taking my complaint to ICASA, if this is not resolved. My last call was 2 weeks ago and still no response. my references are SM169001, SM223552, 948411, Case nos ***7, ***9, ***4,